SF-36 Mental Component Summary (MCS) Score Does Not Predict Functional Outcome After Surgery for End-Stage Ankle Arthritis
Conclusions: In our study of patients with end-stage ankle arthritis treated with arthroplasty or arthrodesis, preoperative mental health status (as measured with the MCS score) did not predict functional outcome (as measured by the change in the AOS score) at the time of intermediate-term postoperative follow-up. AOS scores improved for all patients, regardless of the preoperative MCS score. Level of Evidence: Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Kennedy, S., Barske, H., Wing, K., Penner, M., Daniels, T., Glazebrook, M., Dryden, P., Wong, H., Younger, A. Tags: Foot & Ankle Scientific Articles Source Type: research

Defining the "Three-Dimensional Sagittal Plane" in Thoracic Adolescent Idiopathic Scoliosis
Conclusions: Routine 2-D measurements of thoracic kyphosis erroneously underestimate the preoperative loss of kyphosis in AIS because of errors associated with axial plane rotation, an inherent component of thoracic scoliosis. Level of Evidence: Diagnostic Level II. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Newton, P. O., Fujimori, T., Doan, J., Reighard, F. G., Bastrom, T. P., Misaghi, A. Tags: Pediatrics, Spine Scientific Articles Source Type: research

25-Hydroxyvitamin-D and Bone Turnover Marker Levels in Patients with Distal Radial Fracture
Conclusions: In this cohort, 25(OH)D levels were not associated with distal radial fracture and do not appear to affect the risk assessment for distal radial fracture in postmenopausal women. Patients with a distal radial fracture, however, had increased bone turnover as evidenced by high P1NP and osteocalcin levels. Women with both a high P1NP level and low bone mineral density were at particularly high risk for fracture. Level of Evidence: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Rozental, T. D., Herder, L. M., Walley, K. C., Zurakowski, D., Coyle, K., Bouxsein, M. L., Wolf, J. M. Tags: Hand & Wrist, Trauma Scientific Articles Source Type: research

Native Knee Laxities at 0{degrees}, 45{degrees}, and 90{degrees} of Flexion and Their Relationship to the Goal of the Gap-Balancing Alignment Method of Total Knee Arthroplasty
Conclusions: Because five of the seven laxities were at least 1.7° or 1.6 mm greater at both 45° and 90° of flexion than those at 0° of flexion, the laxities of the native knee measured in this study are unequal at these flexion angles and therefore do not support the goal of gap-balancing in total knee arthroplasty. Clinical Relevance: One possible disadvantage of changing the native laxities at 45° and 90° of flexion to match those at 0° of flexion in a total knee arthroplasty is the overly tight soft-tissue restraints relative to those of the native knee, which patients may perceive as pain,...
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Roth, J. D., Howell, S. M., Hull, M. L. Tags: Knee Scientific Articles Source Type: research

Impact of Spinous Process Integrity on Ten to Twelve-Year Outcomes After Posterior Decompression for Lumbar Spinal Stenosis: Study of Open-Door Laminoplasty Using a Spinous Process-Splitting Approach
Conclusions: Osseous continuity between the spinous processes and the lamina after posterior decompression of the lumbar spine is important for maintaining the positive surgical benefit. Deleterious effects of osseous discontinuity on the outcomes were obvious at ten to twelve years, but not at two or four years. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Kakiuchi, M., Fukushima, W. Tags: Spine Scientific Articles Source Type: research

Lumbar Spine Surgery in Patients with Parkinson Disease
Conclusions: Despite a higher rate of complications than in the general population, the overall outcome of spine surgery in patients with mild to moderate Parkinson disease is good, with improvement of spine-related pain. A larger prospective study is warranted. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Schroeder, J. E., Hughes, A., Sama, A., Weinstein, J., Kaplan, L., Cammisa, F. P., Girardi, F. P. Tags: Spine Scientific Articles Source Type: research

Glenoid Bone-Grafting in Revision to a Reverse Total Shoulder Arthroplasty
Conclusions: Although there were relatively high rates of glenoid loosening and reoperation at mid-term follow-up, glenoid reconstruction with bone graft in the revision setting was able to relieve pain and restore shoulder function and stability. Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Wagner, E., Houdek, M. T., Griffith, T., Elhassan, B. T., Sanchez-Sotelo, J., Sperling, J. W., Cofield, R. H. Tags: Shoulder Scientific Articles Source Type: research

Subacromial Space Width: Does Overuse or Genetics Play a Greater Role in Determining It?: An MRI Study on Elderly Twins
Conclusions: The acromiohumeral distance is mainly genetically determined and only marginally influenced by external factors. Level of Evidence: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Gumina, S., Arceri, V., Fagnani, C., Venditto, T., Catalano, C., Candela, V., Nistico, L. Tags: Shoulder Scientific Articles Source Type: research

Impact of Clinical Practice Guideline on the Treatment of Pediatric Femoral Fractures in a Pediatric Hospital
Conclusions: We found little direct clinical impact of the recently published AAOS clinical practice guideline on the treatment of pediatric diaphyseal femoral fractures. This analysis suggests an important role for clinical assessment after guideline publication to identify areas of potentially important future clinical research and to assess the utility of this guideline. (Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Oetgen, M. E., Blatz, A. M., Matthews, A. Tags: Pediatrics, Trauma Scientific Articles Source Type: research

A Fresh Look at Soft-Tissue Balancing: Commentary on an article by Joshua D. Roth, MS, et al.: "Native Knee Laxities at 0{degrees}, 45{degrees}, and 90{degrees} of Flexion and Their Relationship to the Goal of the Gap-Balancing Alignment Method of Total Knee Arthroplasty"
(Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Delanois, R. E., Elmallah, R. K. Tags: Knee Commentary and Perspective Source Type: research

No Bone? No Problem! Is Bone-Grafting at the Time of Revision to a Reverse Shoulder Arthroplasty a Reasonable Option?: Commentary on an article by Eric Wagner, MD, et al.: "Glenoid Bone-Grafting in Revision to a Reverse Total Shoulder Arthroplasty"
(Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Tashjian, R. Tags: Shoulder Commentary and Perspective Source Type: research

Is It All in the Genes?: Commentary on an article by S. Gumina, MD, PhD, et al.: "Subacromial Space Width: Does Overuse or Genetics Play a Greater Role in Determining It? An MRI Study on Elderly Twins"
(Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 21, 2015 Category: Orthopaedics Authors: Litchfield, R. Tags: Shoulder Commentary and Perspective Source Type: research

Ethics of Provider Risk Factor Modification in Total Joint Arthroplasty
(Source: The Journal of Bone and Joint Surgery)
Source: The Journal of Bone and Joint Surgery - October 7, 2015 Category: Orthopaedics Authors: Bronson, W. H., Lindsay, D., Lajam, C., Iorio, R., Caplan, A., Bosco, J. Tags: Ethics, Hip, Knee Ethics in Practice Source Type: research

Scoring the SF-36 in Orthopaedics: A Brief Guide
Abstract: The Short Form-36 (SF-36) is the most widely used health-related quality-of-life measure in research to date. There are currently two sources for the SF-36 and scoring instructions: licensing them from Optum, Inc., or obtaining them from publicly available documentation from the RAND Corporation. The SF-36 yields eight scale scores and two summary scores. The physical component summary (PCS) and mental component summary (MCS) scores were derived using an orthogonal-factor analytic model that forced the PCS and MCS to be uncorrelated, and it has been shown to contribute to an inflation of the MCS in patients with ...
Source: The Journal of Bone and Joint Surgery - October 7, 2015 Category: Orthopaedics Authors: Laucis, N. C., Hays, R. D., Bhattacharyya, T. Tags: The Orthopaedic Forum Source Type: research

Nontraumatic Osteonecrosis of the Femoral Head: Where Do We Stand Today?: A Ten-Year Update
Although multiple theories have been proposed, no one pathophysiologic mechanism has been identified as the etiology for the development of osteonecrosis of the femoral head. However, the basic mechanism involves impaired circulation to a specific area that ultimately becomes necrotic. A variety of nonoperative treatment regimens have been evaluated for the treatment of precollapse disease, with varying success. Prospective, multicenter, randomized trials are needed to evaluate the efficacy of these regimens in altering the natural history of the disease. Joint-preserving procedures are indicated in the treatment of prec...
Source: The Journal of Bone and Joint Surgery - October 7, 2015 Category: Orthopaedics Authors: Mont, M. A., Cherian, J. J., Sierra, R. J., Jones, L. C., Lieberman, J. R. Tags: Hip Current Concepts Review Source Type: research